“…Studies on this issue generally use economics-based arguments to propose factors that affect private firms' decisions to hire external auditors. These factors include increased operational complexity (Allee and Yohn, 2009; Cassar and Ittner, 2009; Dedman et al , 2014; Niemi et al , 2012), higher-agency problems (Cassar and Ittner, 2009; Collis, 2012; Dedman and Kausar, 2012; Niemi et al , 2012) or tax-related motives (Cassar and Ittner, 2009; Hope et al , 2021; Ojala et al , 2016).…”